eunicin

(3aS,5S,6R,9E,14R,15S,15aR)-3a,4,5,6,7,8,11,12,13,14,15,15a-Dodecahydro-6-hydroxy-6,10,14-trimethyl-3-methylene-5,15-epoxycyclotetradeca[b]furan-2(3H)-one